Bed-bottom.



No. 872,681. PATENTED DEC. 3, 1907. 1?. A. rowsas & T. KLIPFEL.

BED BOTTOM.

APPLICATION FILED APR. 27, 1907.

2 SHEETS-SHEET 1.

a A) V\ 6- 4N 5 1 d5 4 1 5 No. 872,681. PATENTED DEC. 3, 1907. F. A. POWERS &;T. KLIPFEL.

BED BOTTOM.

APPLICATION FILED B. 27, 1907.

2 SHEETS-SHEET 2.

UNITED STATES PATENT oFnroE.

FRANK A. POWERS AN THOMAS KLIPFEL, OF CHICAGO, ILLINOIS, ASSIGNORS TO UNION WIRE MATTRESS COMPANY, OF CHICAGO, IL INOIS, A'GORPORATION OF ILLINOIS.

BED-BOTTOM.

Y No. 872,681.

vented certain new 'and useful Im rove ments in Bed-Bottoms,of which the following is a specification.

This invention relates to bed bottoms of that general t e which comprises a wire fabric made up iii interhooked bent-wire units or links connected at its ends to'the headand foot rails of the frame by transverse rows of helicals designed to-afford the requisite elasticity.

The leading object of the invention is to. provide a 1 bed bottom of this character which shall possess the requisite elasticor spring quality as an entirety, but wherein local bending and sagging effects shall be reduced to a minimum.

A minor Object is to provide a structure well adapted to preserve, under load, the true relative positions of the various units and links composing the same;

These objects-we accomplish-through a construction wherein local strains are to a considerable extent distributed throughout. the entire fabric, and wherein'the several lonm which, I

Figure 1 is a top plan view of our improved bed bottom applied to the bed bottom frame.

Fig. 2 is a fragmentary View of one corner portion of Fig: 1 on a considerably enlarged scale'for the sake of greater clearness of de tail. Fig. 3 isan edge view of Fig. 2'.-

Referring to the drawings, Sand 6 may designate the head and foot rails, respectively, 7 the parallel side rails, and 8 the connecting corner brackets of the bed frame; these latter being connected to the vertical members of the angle iron end rails 5 and 6 by the bolts 9 and nuts 10 (Fig. 3)' in a manner well understood. The head and foot rails 5 and 6 are apertured at intervals, as usual, to; receive the usual end rows of helical springs 11 and 12, respectively.

The main body of the fabric constituting Specification of Letters Patent.

Application filed April 27. 1907- Serial No- 370|7Z2.

' the intermediate he tending between and supported by Said side Patented Dec. 3,1907;

the covering of the bed bottom is made upby a plurality .of parallel longitudinal rows of U-shaped bent-wire units 13 the individual units of each row being connected by forming hooks 14 on the free ends of the side members of the units, which hooks are engaged with the closed ends of adjacent units. This form a of unit and mode of connection is" known among manufacturers of this type of bed botl tom, and no invention in the specific form of such unit is herein claimed byus. 'The fabric is connected at one end to theadjacent row of helicals 11 by spreading the side members of the end row of units so as to cause adjacent side members 13? of laterally adjacent unitsv to interhook with a helical disposed midway therebetween, as clearly shown in the detail view, Fig. 2. At the other end of the fabric connection is conveniently made to the helicals through the interposition of V-shaped links 15 engaging the helicals at their closed ends and at their open ends hookinginto adjacent units of laterally adj acent strands. The helicals place the entire fabric under considerable'tension so as to give a smooth, uniform and practically level surface to the fabric as a whole.

, Heretofore, so far as we are aware, infabtion, while permitting of a lengthwise as well as a crosswise folding of the'fabric for shipment or storage, has but slightmechanical" value in the'direction of a lateral distribution of the strains between the several lon'gitudinal strands.

One object of our present invention, as already suggested, is to minimize local bowing or sagging eflects, especiall in. a direction crosswise of the fabric; an this object we attain by the followin means. 16 desig .nates each of a pair 0 side wires that are somewhat heavier than the wire of which the units of the fabric are composed, which side wires are connected to and between the ends of the head and foot rails by means of helicals 17 that are preferabl somewhat longer than male 11 and 12. Ex-

wires at suitably space mtervals in a manner to form transverse supports for the fabric are a series of cross wires 18. Preferably these wlres are passed through the downwardly turned hooks 14 of those transverse tween adjacent longitudinal rows. of

rows of units which they underlie,-this arrangement tending to maintain the proper tensioning and uniform spacing of the cross 2 and 3. 7 It'will be seen that by reason of H ture might likewise be made b those skilled this construction, the bending strains re-- ceived by the several individual longitudinal strand's'are transmitted and distributedin a considerable measure to andthroughout adjacent strands, while the strains received by the fabricas a whole are to a considerable e2;-

' tent transmitted-through the cross wires 18 to the heavier side wires 16. The result of this construction is that, while the bed bottom as a whole is of a springy and resilient character, yet excessive local bending and sagging is done away with spreading of the longitudinal strands is revented; and the fabric readily regains "an retains its substantially level form throughout when relieved of .load.

It will be evident that our invention is capable "of being carried out with other forms of bent-wire units than those herein shown, and also that the. supporting cross wires might be otherwise connected to the longitudinal strands or caused to merely underlie the latter/l The specific forms of spacing sleeves shown arealso not of the essence of the invention in its broader aspects.

Other changes in the details of the strucin the art without departing om the principle or sacrificing any of the advantages of the invention.

We claim:

w- 1 bed'bottom comprising a frame a bed bottom fabric, end rows of helicals connecting said fabric-to the head and foot rails of said frame, side wires connecting the ends of said head and foot rails, and cross wires connecting said side wires at intervals and supportin scribe.

2. A bed bottom comprising a frame, a bed stantially as described.

said fabric, substantially as debottom fabriccomposed of parallel longitudinal strands of interhooked units, end rows ofhelicals connecting said fabric .to the head and foot rails of said frame, side wires connecting the ends of said head and foot rails,

and cross wires connecting said side wires at intervals and passed through the hooks of.

transverse rows of units in said fabric, sub- 3. A bed bottom comprising a frame, a bed bottom fabric composed ofparallel longitu dinal strands of bent-wire units, end rows of helicals connectingsaid fabric to the head and foot rails of said frame, side wires connecting the ends of said head and footrails, cross wires connecting said side Wires at intervals and supportin said fabric, and spac-.

ing sleeves on said si e wires between adj acent longitudinal rows of units in said fabric, substantially as described.

.4. A bed bottom comprising a frame, a bed bottom'fabric composed of arallel longitudinal strands of interhooked hent-wire units, end rows of helicals connecting said fabric to the head and foot rails of said frame, side wires connecting theends of said head and foot rails, cross wires connecting said side wires at intervals and passed through the hooks of transverserows of units in said fabric, and spacing sleeves on saidside wires between adjacent longitudin'al rows of units in said fabric, substantially as described.

5. A bed bottom comprising a frame, a bed bottom fabric composed of parallel longitudinal strands of interhooked bent-wire units, side Wires disposed alongside the opposite edges ofsaid fabric, end rows of helicals connecting said fabric and said side wires to the head a d foot rails of said frame, cross wires connec ing said side wires at intervals and passed through the hooks of transverse rows of units in said fabric, and spacing sleeves on said wires between adjacent longitudinal rows of units in said fabric, substantially as described.

FRANK A. POWERS. THOMAS KLIPFEL.

Witnesses SAMUEL N. .PoNn, L; F. MOCREA. 

